From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E877DD5B175 for ; Mon, 15 Dec 2025 15:04:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 479826B000D; Mon, 15 Dec 2025 10:04:03 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 429DA6B000E; Mon, 15 Dec 2025 10:04:03 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 318B76B0010; Mon, 15 Dec 2025 10:04:03 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 1C5C56B000D for ; Mon, 15 Dec 2025 10:04:03 -0500 (EST) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 93BA61DFD83 for ; Mon, 15 Dec 2025 15:04:02 +0000 (UTC) X-FDA: 84222025524.21.143DED1 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf15.hostedemail.com (Postfix) with ESMTP id A9347A0011 for ; Mon, 15 Dec 2025 15:04:00 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf15.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1765811041; a=rsa-sha256; cv=none; b=P7fbKZ/CKeG8WXo4667RLGWEZKpsbySWpTfbCfyUtaZykKsbOqdaNtvMHMSnBouAUPc+ef D8AcSkZdO8R27nne7nanzmq2Yiys6D/v87p2rwLQxfYY9pFevAyE7UDOLtATM6caP7v8jH GrTYNgHC4Uwwy2zn6x4v8MbtBnfgwwM= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf15.hostedemail.com: domain of kevin.brodsky@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=kevin.brodsky@arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1765811041; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wxflffJTh0pyYZvyWMeVPJtd+lYqkq24w2n0H8YxAm8=; b=700kB+tH5rPMAr74HmM85L6JwEWqnOFSTeTPm19sejUR7NiZaoPBPL3Kyep1SmlxSh2bZ+ xwWb80fvkF7x02vEcj6ecNsjLsEPBW+aBg2Da2pup3XzNzlI/lAdZO6B6U9Zs23F1b56C1 cz3+o/jvAyVIE2vg0mXVuhjuCpbWWP0= Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id ABDB91684; Mon, 15 Dec 2025 07:03:52 -0800 (PST) Received: from e123572-lin.arm.com (e123572-lin.cambridge.arm.com [10.1.194.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8D5F43F73B; Mon, 15 Dec 2025 07:03:54 -0800 (PST) From: Kevin Brodsky To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Alexander Gordeev , Andreas Larsson , Andrew Morton , Anshuman Khandual , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , "Ritesh Harjani (IBM)" , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Venkat Rao Bagalkote , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Subject: [PATCH v6 04/14] sparc/mm: implement arch_flush_lazy_mmu_mode() Date: Mon, 15 Dec 2025 15:03:13 +0000 Message-ID: <20251215150323.2218608-5-kevin.brodsky@arm.com> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20251215150323.2218608-1-kevin.brodsky@arm.com> References: <20251215150323.2218608-1-kevin.brodsky@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: A9347A0011 X-Stat-Signature: s5h3asoz987kj9dh7soke64h5ai4rup1 X-Rspam-User: X-HE-Tag: 1765811040-638802 X-HE-Meta: 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 W0Q7BPNB WFHVuM+JAeOzVSllUoMIQjwHOJdVdlN3Mmf6COdOm7C2XDoimfWyVijpbamC+TvTzKJTLmbYiVrH4DBb3Fh6BMiVZfhAJKRKLRQmneJOFuQaTfx11KUhXxfrDuMDKoYiDXf19UDGnrYoj/LRpwUm0daPKCbEKJaqf9ybf/io4bh+GNxXRpZ76EtTFLD48AeG0VkVo1Nn2FPh6X6j5GHOZhL/eATZc9Av3Ruds1Ix+dILBf1miM9ZidOMAzFoeknMVqUJNovMbDItbdubMYPb8n1YeCStziB03VHpTUT0rdpbRvEU= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Upcoming changes to the lazy_mmu API will cause arch_flush_lazy_mmu_mode() to be called when leaving a nested lazy_mmu section. Move the relevant logic from arch_leave_lazy_mmu_mode() to arch_flush_lazy_mmu_mode() and have the former call the latter. Note: the additional this_cpu_ptr() call on the arch_leave_lazy_mmu_mode() path will be removed in a subsequent patch. Acked-by: David Hildenbrand Signed-off-by: Kevin Brodsky --- arch/sparc/include/asm/tlbflush_64.h | 2 +- arch/sparc/mm/tlb.c | 9 ++++++++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/sparc/include/asm/tlbflush_64.h b/arch/sparc/include/asm/tlbflush_64.h index 8b8cdaa69272..925bb5d7a4e1 100644 --- a/arch/sparc/include/asm/tlbflush_64.h +++ b/arch/sparc/include/asm/tlbflush_64.h @@ -43,8 +43,8 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end); void flush_tlb_pending(void); void arch_enter_lazy_mmu_mode(void); +void arch_flush_lazy_mmu_mode(void); void arch_leave_lazy_mmu_mode(void); -#define arch_flush_lazy_mmu_mode() do {} while (0) /* Local cpu only. */ void __flush_tlb_all(void); diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c index a35ddcca5e76..7b5dfcdb1243 100644 --- a/arch/sparc/mm/tlb.c +++ b/arch/sparc/mm/tlb.c @@ -59,12 +59,19 @@ void arch_enter_lazy_mmu_mode(void) tb->active = 1; } -void arch_leave_lazy_mmu_mode(void) +void arch_flush_lazy_mmu_mode(void) { struct tlb_batch *tb = this_cpu_ptr(&tlb_batch); if (tb->tlb_nr) flush_tlb_pending(); +} + +void arch_leave_lazy_mmu_mode(void) +{ + struct tlb_batch *tb = this_cpu_ptr(&tlb_batch); + + arch_flush_lazy_mmu_mode(); tb->active = 0; preempt_enable(); } -- 2.51.2